Saw sharpening and setting device



May 15, 1923. 1,454,893

M. JACKSON SAW SHARPENING AND SETTING DEVICE Filed May 16. 1921 3 Sheets-Sheet l 1 F 1 L W Mazw'zwe Jhaiisan INVENTOR VITNESSE; ATTORNEY M. JACKSON SAW SHARPENING AND SETTING DEVICE Filed May 16, 1921 3 Shets-Sheet 2 Mawrp ce Jackson INVENTOR WITNESSES ATTORNEY 3 SheetS-S he et s INVENTOR A'ITORNEY May 15, 1923..

M. JACKSON SAW SHARPENING AND SETTING DEVICE Filed May 16, 1921 v Page? M a urzce hhckso 2 WI NESSES Patented May 15, 1923.

barre rains MAURICE JACKSON, or ELIDORADO, Kansas.

SAW SHARIENIN G ANDSETTING DEVICE.

7 Application filed May 16, 1921. Serial n6. 469,895.

T all whom it may concern:

Be it known that ALVMAURTOE JACKSON, a citizen of the United States, residing at Eldorado in the county of Butler and State ofKansas, have invented new and useful Improvements in Saw Sharpening and Setting Devices, of which the following is a specification.

This invention relates to devices for sharpening and setting saws, and has for its objeet the provision of a novel device by means of which a saw of any ordinary type, such as a hand saw or the like, may be very quickly and easily sharpened and also set so 5 that the teeth thereof will be disposed at the proper angle. 7

An important and most specific object is the provision of a machine of this character which may be operated either manually or by means of power and which is so constructed that a great many'of the teeth may be sharpened and set at the sametime, the

device being consequently a great time and labor saver.

Another object is the provision of a machine of this character which will not only sharpen and set the teeth of a saw in a very short time but which will treat them so that they will be far more accurate and in better condition than can be obtained by any of the ordinary'or well-known methods.

An additional object is the provision of a device of this character in which are provided a plurality of files which are capable of being simultaneously reciprocated for sharpening the teeth, these files being more over adjustable simultaneously so that they may be caused to lie at different angles for sharpening the saw teeth at different angles. A further object is the provision of a ma chine of this character which will be simple and inexpensive in manufacture, highly efficient in use, durable in service, positive in action and a general improvement 1n the art.

With the above and other objects and advantages in view, the invention consists 1n the details of construction to be hereinafter more fully described an'dclaimed and illusan endelevation of the file holders at one trated in the accompanying drawings, in which: f I

Figure 1 is a plan view of the device, Figure 2 is a side elevation thereof, Figure 3 is a longitudinal sectional View, Figure 4 is a cross sectional view showing an end elevation of the setting means, i i Figure 5 is aplan View of'the setting means alone, v 1 i Figure 6 is a cross sectional View showing end of the device, p I

Figure is a similar view show'i'ngan elevation of the means for holding the'other ends of the files and e i r I Figure 8 is a detail sectional view showing the mounting of the movablerods.

Referring more particularly to the drawings, the numeral IOdesignates the base of the device andll designates a plurality of spaced uprights which arearran'ged injpairs and which extend upwardly from the end 1 portions of the base. Slidable through the pairs of uprights are longitudinally movable rods 12 which are arranged in spaced 1 parallel relation and which are connected intermediate their ends by pairs of cross bars 13. The numeral 14 designates. afsuit able handle associated with one of the rods' 12 whereby to impart re'ciprocatory motion thereto and consequently to both rods. Journaled between two of the cross bars 13 is a series of disks 15 providdwithtrian-- gular holes for receiving one end of a plurality of triangular files 17"which are disposed in spaced parallel relation. The other ends of the files are engaged within triangular holes 18 formedfin disks 19 journaled between the other pair or cross bars 13.

Projecting from the disks 19 are eccentric pins 20 with which is; connected a link 21 which may be moved in one direction or the f other for the purpose of partially rotat ing the disks and consequently changing the angular inclination of the filesQ This link 21 moves through a guide 22 which is pro vided with a setscrew 23 01 the like'for the purpose of holding the latter inadjustecl position.

Disposed below the files and the support ing means therefor is a saw holder comprising a stationary member at including uprights connected by a cross member 26 which has one face formed with a plurality of teeth 27. Associated with this stationary member 2a is a movable member 28 similar in construction and including pivoted. uprights 29 connected by a cross member 30 which has its face toward the cross member 26 formed with a plurality of teeth 31 adapted to interfit with the teeth 27. A suitable cam member 82 is associated with and engages the movable member 28 so that this movable member may be forced toward the stationary 'member 24 and this cam 32 is actuated by means of a suitable pivoted lever 33 mounted upon the base 10.

The operation of the device is as follows: ,Ylhe saw A to be sharpened is placed between the stationary member 2a and the movable member 28 after which the lever 38 is operated so that the cam 32 will force the pivoted member 28 into clamping engagement with the stationary member 24 whereby to hold the saw rigid. It is of course understood that the is placed between the two devices with its teeth uppermost. The link 21 is moved So that the files 17 will have the proper angular adjustment to accord with the pitch of the teeth desired and the operator then moves the handle 14 so as to reciprocate the rods 12 which carry the cross bars 13 which form a carriage for the files. The reciprocatory movement of the rods 12 is continued until the files have sharpened or cut the teeth to the desired sharpness and size. In actual practice it is probable that the files 17 will be placed a distance apart equal to twice the distance between the successive saw teeth so that the files will operate to sharpen every other tooth of the saw. After the alternate teeth have been sharpened as above described, it is of course a simple matter for the operator to release the movable member 28 from its clamping relation to the stationary member 24 and shift the saw longitudinally so that the other alternate teeth thereof will be sharpened by the reoiprocatory movement of the files. .iter the saw has been thus sharpened, it is intended that the cam 32 be released so that the movable member 28 will be moved out of clamping engagement with the member 24:, whereupon the saw is moved downwardly between the two members until the saw teeth register with the teeth 27 and 31 whereupon the operator then moves the lever 33 to bring the cam 32 into engagement with the movable member 28 for vforcing the movable member or the stationary member '24: and owing to the fact that the teeth 27 and 31 are in staggered relation or in interfitting relation it will be quite apparent that the teeth will study or the drawings it will be apparent that "rave thus provided a simply constru consequently inexpensive device ioi very rapidly sharpening and setting saw teeth in an expeditious and efilective manner free from great labor and at a con siderable saving of time and energy.

l t bile l have shown and described the preferred embodiment of the invention, it is of course to be understood that I reserve he right to make such changes in the form, construction and arrangement of parts as will not depart from the spirit of the invention or tie scope of the subjoined claims.

Having thus described the invention What is claimed:

l. it saw sharpening machine comprising base, a plurality of uprights rising from said base, a pair oi? rods slidabl'e through the uprights, cross members connected with said rods, a plurality of files, means Connected with said cross members for holding said files, a clamping device disposed between said "prights and beneath said files and adapted to hold a saw to be sharpened, and means for simultaneously adjusting all of the files.

2. A device of the character: described comprising base, a plurality of uprights ng theioiron'i and arranged in pairs, a )air of rods slidable through said uprights and arranged in spaced parallel relation,

members carried by said rods, a plurality of disks ou'rnaled in said cross members and formed with holes, files disposed between said cross members andhavi'ng their ends engaged within the holes in said disks, a link connected with all of the disks in one cross member whereby to effect rotary adjustment oi? all the files simultaneously, means for holding said links in adjusted positions, and a clamping device disposed beneath said files and adapted to holda saw to be sharpened.

A device of the character described comprisin a base, a plurality of uprights rising therefrom, a pair of rods slida'ble tl rough said uprights and arranged in spaced parallel relation, cross members carried by said rods, a plurality of files having tlr'r ends carried by the cross members, 1' us for reciprocating saidrods and consequentlr the files, and a clamping device carried by the base and disposed beneath the files, said clamping device including'a stationary member, a pivoted member associated with the stationary member, and cam operated means for forcing said movable member into clamping relation with the stationary member, the confronting faces of the stationary member and the pivoted member tit) ltllll being formed with teeth arranged in stagsisting of bars formed with mating recesses gered relation and adapted to engage alterand disks located within said recesses and 1 nate teeth of a saw whereby to effect setting clamped by the bars, said disks being formed thereof. with triangular openings for the reception 5 4. In a device of'the character described, of the files. a

a frame, saw clamping means, a movable In testimony whereof I affix my signaframe member, and means on said movable ture.

frame for holding a plurality of files con- MAURICE JACKSON. 

